namespace Org.BouncyCastle.Asn1
{
	public class BerSet
		: DerSet
	{
		public static new readonly BerSet Empty = new BerSet();

		public static new BerSet FromVector(
			Asn1EncodableVector v)
		{
			return v.Count < 1 ? Empty : new BerSet(v);
		}

		internal static new BerSet FromVector(
			Asn1EncodableVector v,
			bool				needsSorting)
		{
			return v.Count < 1 ? Empty : new BerSet(v, needsSorting);
		}

		/**
		 * create an empty sequence
		 */
		public BerSet()
		{
		}

		/**
		 * create a set containing one object
		 */
		public BerSet(Asn1Encodable obj) : base(obj)
		{
		}

		/**
		 * create a set containing a vector of objects.
		 */
		public BerSet(Asn1EncodableVector v) : base(v, false)
		{
		}

		internal BerSet(Asn1EncodableVector v, bool needsSorting) : base(v, needsSorting)
		{
		}

		/*
		 */
		internal override void Encode(
			DerOutputStream derOut)
		{
			if (derOut is Asn1OutputStream || derOut is BerOutputStream)
			{
				derOut.WriteByte(Asn1Tags.Set | Asn1Tags.Constructed);
				derOut.WriteByte(0x80);

				foreach (Asn1Encodable o in this)
				{
					derOut.WriteObject(o);
				}

				derOut.WriteByte(0x00);
				derOut.WriteByte(0x00);
			}
			else
			{
				base.Encode(derOut);
			}
		}
	}
}
